namespace mhlo {

// Builds body for reduce op by using the template binary op as the
// reducer op.
template <typename Op>
void BuildReduceBody(Type element_type, Region* body, OpBuilder* builder) {
  OpBuilder::InsertionGuard guard(*builder);
  Block* block = builder->createBlock(body);

  // Block arguments are scalars of the given element type.
  Type type = RankedTensorType::get(/*shape=*/{}, element_type);
  Location loc = body->getLoc();

                                        block.getArgumentTypes(),
                                        func_type.getResults()));

  IRMapping mapping;
  OpBuilder builder(module_op);
  OpBuilder::InsertionGuard g(builder);
  // The function has been checked to have at least one use.
  auto function_uses =
      SymbolTable::getSymbolUses(target_func, &module_op.getBodyRegion());